- 1Choose file
- 2Adjust
- 3Download
Image Transparency Checker online, free
Count fully transparent, partially transparent and opaque pixels in every image. Verify background removal before exporting your batch.
- Runs in your browser — no upload
- Free, no sign-up, no watermark
- JPEG
- PNG
- WebP
- AVIF
- GIF
- BMP
- TIFF
- HEIC / HEIF
How to use Image Transparency Checker
- 1
Add your JPEG, PNG and WebP files
Drop one or more files on the page, paste it, or click Select Files. Nothing is uploaded — it opens straight in your browser.
- 2
Fine-tune the settings
The defaults already suit most files; change them only if you need to.
- 3
Run Image Transparency Checker
Press the start button. Processing happens on your device, usually in seconds.
- 4
Download the result
Save the finished file, or continue with another tool without downloading in between.
What Image Transparency Checker can do
- Private by design — files are processed in your browser and never uploaded
- Batch processing — up to 500 files at once
- Free with no sign-up, no watermark and no daily limit
Image Transparency Checker — frequently asked questions
What does Image Transparency Checker report?
Count fully transparent, partially transparent and opaque pixels in every image. Verify background removal before exporting your batch.
Are files uploaded?
No. Processing runs on your device. Select up to 500 supported images and download a JSON report.
How are animated images handled?
Only the first decoded frame is analyzed. Results describe decoded pixels, not encoded metadata.
How are transparent pixels counted?
Alpha zero means fully transparent, 255 means opaque, and intermediate values mean partial transparency. Color histograms exclude fully transparent pixels and count partially transparent pixels once.
Is the tool free?
Yes. No sign-up is required. Large batches depend on your device memory and processing speed.
Related tools
- Image InfoDimensions, format, bit depth, colour space, size, DPI and animation frames.
- Remove BackgroundRemove the background from people, products, animals and cars — edge refinement, hair-detail mode, transparent PNG or WebP, batch, on your device.
- Resize ImageResize by pixels, percentage, longest side or target file size — lock aspect ratio, never enlarge, pick the resampling filter, batch.
- Color Palette ExtractorDominant colours as HEX, RGB and HSL — export CSS variables, Tailwind config or an ASE swatch.
- Color Picker from ImageClick any pixel to get its colour, or average a region.
- Compare ImagesSide-by-side slider, difference heatmap and a similarity score.
- Edit Image MetadataSet author, copyright, title, GPS and dates.
- View EXIF / MetadataCamera, lens, exposure, GPS on a map, dates, ICC and XMP — all read on your device.